Just how "independent" is the IAA and how well regarded is it by similar bodies? I don't know but I could see how in a small country where many interests are involved there can be "invisible pressures" and people perhaps putting a better shine on things than they might admit. Heck it happens in this country too... we have no corruption (or low corruption) officially but we all know that things are not as they always seem.
Note, for the avoidance of doubt, I make no assertions concerning RYR and the IAA, but am interested in just how robust the IAA is. To use a UK example, in the financial industry, the FSA is hardly viewed as a shining example of regulatory competence.